CVE-2025-69297

Executive Summary

CVE-2025-69297 is a Missing Authorization vulnerability in the GhostPool Aardvark Plugin for WordPress. This flaw allows an unauthenticated attacker to exploit incorrectly configured access control security levels, potentially leading to unauthorized data modification or privilege escalation. The vulnerability affects all versions of the plugin from n/a through 2.19. As of this report, no official patch has been released, and no public proof-of-concept (PoC) code is available. The CVSS score is 7.5 (High), driven by the low attack complexity and network-based attack vector.

Supply Chain & Package Security

This vulnerability resides in a WordPress plugin ecosystem. The Aardvark Plugin is distributed via the WordPress plugin repository and third-party marketplaces. Users should verify the integrity of their plugin files and monitor for any unauthorized modifications. Since no patch is available, the supply chain risk is elevated, as users must rely on custom mitigations or disable the plugin entirely.

CVSS Breakdown & Threat Level

• CVSS Score: 7.5 (High)
• Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
• Attack Vector (AV): Network (N) – Exploitable remotely.
• Attack Complexity (AC): Low (L) – No special conditions required.
• Privileges Required (PR): None (N) – No authentication needed.
• User Interaction (UI): None (N) – No user action required.
• Scope (S): Unchanged (U) – The vulnerable component remains the same.
• Confidentiality (C): None (N) – No data exposure.
• Integrity (I): High (H) – Full write access to unauthorized data.
• Availability (A): None (N) – No denial-of-service impact.

Threat Level: High. The vulnerability is easy to exploit remotely without authentication, and it can lead to significant integrity compromise of the WordPress site.

Deep Dive & Mechanics

The Aardvark Plugin likely implements custom AJAX handlers or REST API endpoints that perform sensitive operations (e.g., updating plugin settings, modifying user roles, or altering content). The vulnerability stems from a missing current_user_can() or similar capability check in these handlers. An attacker can send crafted HTTP requests to these endpoints, bypassing authorization checks and performing actions reserved for administrators.

Root Cause: The plugin fails to verify that the requesting user has the required WordPress capabilities (e.g., manage_options, edit_posts) before executing privileged actions. This is a classic case of Insecure Direct Object Reference (IDOR) combined with missing authorization.

Attack Flow:

1. Attacker identifies the vulnerable AJAX action or REST route (e.g., wp_ajax_aardvark_update_settings).
2. Attacker crafts a POST request with the required parameters (e.g., action=aardvark_update_settings&option_name=some_option&option_value=malicious_value).
3. The request is sent to the WordPress site without any authentication token or nonce.
4. The plugin processes the request and modifies the target data, assuming the request is authorized.

Vulnerable vs. Patched Code

Since no patch is available, we can only hypothesize the vulnerable code pattern.

Vulnerable Code (PHP):

add_action('wp_ajax_nopriv_aardvark_update_settings', 'aardvark_update_settings');
function aardvark_update_settings() {
    // Missing capability check
    $option_name = sanitize_text_field($_POST['option_name']);
    $option_value = sanitize_text_field($_POST['option_value']);
    update_option($option_name, $option_value);
    wp_die();
}

Patched Code (Hypothetical):

add_action('wp_ajax_aardvark_update_settings', 'aardvark_update_settings');
function aardvark_update_settings() {
    // Added capability check
    if (!current_user_can('manage_options')) {
        wp_die('Unauthorized', 403);
    }
    $option_name = sanitize_text_field($_POST['option_name']);
    $option_value = sanitize_text_field($_POST['option_value']);
    update_option($option_name, $option_value);
    wp_die();
}

The patched version restricts the action to authenticated users with manage_options capability and removes the nopriv hook (which allows unauthenticated access).

Exploitation & Lab Setup

Red Team (Offensive)

Lab Setup:

• Target: WordPress 6.x with Aardvark Plugin <= 2.19
• Attacker: Kali Linux with curl and Burp Suite

Exploitation Steps:

1. Identify the vulnerable endpoint by analyzing the plugin source code or using a fuzzer.
2. Send a crafted request to modify a critical option (e.g., admin_email or siteurl).

curl -X POST http://target.com/wp-admin/admin-ajax.php \
  -d "action=aardvark_update_settings&option_name=admin_email&option_value=attacker@evil.com"

3. Verify the change by accessing the WordPress admin panel or checking the site options.

Note: No public exploit code is available. The above is a hypothetical example based on common patterns.

Blue Team (Defensive)

Detection Steps:

• Monitor for unusual AJAX requests to admin-ajax.php with unknown actions.
• Look for requests lacking a valid nonce or authentication cookie.
• Alert on changes to critical WordPress options (e.g., admin_email, siteurl, users_can_register).

Mitigation:

• Disable the Aardvark Plugin until a patch is released.
• Implement a Web Application Firewall (WAF) rule to block requests to known vulnerable endpoints.
• Use a WordPress security plugin to monitor file integrity and option changes.

Indicators of Compromise (IOCs)

• Network IOCs:
  • HTTP POST requests to /wp-admin/admin-ajax.php with action=aardvark_* parameters.
  • Unusual option_name and option_value parameters in POST data.
• File IOCs:
  • Modified WordPress options in the wp_options table (e.g., admin_email, siteurl).
  • New user accounts with elevated privileges.
• Log IOCs:
  • WordPress debug log entries showing unauthorized AJAX calls.
  • Web server access logs with 200 responses to admin-ajax.php from unauthenticated IPs.

Detection Engineering

YARA Rule

rule Detect_Aardvark_Plugin_Vulnerability {
    meta:
        description = "Detects exploitation attempts against CVE-2025-69297 in GhostPool Aardvark Plugin"
        author = "Valters IT"
        date = "2025-04-10"
        hash = "unknown"
    strings:
        $ajax_action = "aardvark_" ascii wide nocase
        $option_param = "option_name" ascii wide nocase
        $admin_ajax = "admin-ajax.php" ascii wide nocase
    condition:
        all of them
}

Sigma Rule

title: Detect CVE-2025-69297 Exploitation Attempts
id: 12345678-1234-1234-1234-123456789012
status: experimental
description: Detects HTTP POST requests targeting the Aardvark Plugin vulnerable endpoint
author: Valters IT
date: 2025-04-10
logsource:
    category: webserver
    product: apache
detection:
    selection:
        cs-method: POST
        cs-uri-query|contains: "admin-ajax.php"
        cs-uri-query|contains: "action=aardvark_"
    condition: selection
falsepositives:
    - Legitimate plugin updates (if any)
level: high

Suricata Rule

alert http any any -> $HOME_NET any (
    msg:"CVE-2025-69297 - Aardvark Plugin Missing Authorization Exploit";
    flow:to_server,established;
    content:"POST"; http_method;
    content:"admin-ajax.php"; http_uri;
    content:"action=aardvark_"; http_client_body;
    classtype:attempted-admin;
    sid:1000001;
    rev:1;
)

Remediation & Mitigation

Immediate Actions:

1. Disable the Aardvark Plugin until a security patch is released by GhostPool.
2. Review WordPress user roles and remove any suspicious accounts.
3. Audit the wp_options table for unauthorized changes.

Long-term Measures:

• Implement a WordPress security plugin (e.g., Wordfence, Sucuri) to monitor file changes and block malicious requests.
• Enforce least privilege for all WordPress users.
• Regularly update all plugins and themes.
• Use a Web Application Firewall (WAF) with custom rules to block known vulnerable endpoints.

Patch Status: UNKNOWN / UNPATCHED. Monitor the GhostPool plugin page for updates.

Valters IT
Securing Digital Frontiers